Electrical connecter



F. A. ANDERSON ELECTRICAL CONNECTER Filed Dec. 22', 1921 Feb. '28, 1928.1 ,660,827

Patented Feb. 28, 1928;

(UNITED STATES rarest caries.

FRITZ A. ANDERSON, OF MILTON, WISCONSIN, ASSIGNOR, BY MESNE ASSIGNMENTS,TO THE BUR/DICK CORPORATION, OF MILTON, WISCONSIN, A CORPORATION OFDELAWARE.

ELECTRICAL CONNECTER.

Application filed December 22, 1921. Serial No. 524,089.

This invention relates to electrical connecters.

It will be explained as applied to a water cooled therapeutic lamp such,for example, 6 as of the type disclosed in my U. S. Patent No.1,435,193; granted November 14, 1922. One of the objects of thisinvention is to provide an improved electrical connecter. Another objectis to provide a connector W which effectively assists in resilientlysupporting the lamp. 7

Other. objects are to provide a support connecter which is simple inconstruction, inexpensive to manufacture, readily applied 15 and usedand reliable in operation.

Other objects and advantages will hereinafter appear.

An embodiment of the invention is illustrated in the accompanyingdrawing, 20 wherein Fig. 1 is a side elevation of a part of a lamp, theenclosing housing being in sec tion to expose the lamp tube and itsim'.-

proved connecter.

Fig. 2 is a bottom plan of the lamp with the bottom of the housingremoved.

Fig. 3 is a plan of. the connecter. Fig. 4 is a side elevation thereof.Fig. 5 is a plan of the blank from which 30 the connector is formed, and

. Fig. 6 is an enlarged section of the clamping nut of the support.

The therapeutic lamp with which this supporting connecter isparticularly adapt- :5 ed for use comprises in general a lamp tube orburner 1 and an enclosing housing 2 within and by which the tube iscarried. The tube is insertable into and removable from its positionthrough an end of the .0 housing which may be closed by a removablebottom 3. Inasmuch as the tubes and housings are well known', one commontype being illustrated in the atent heretofore mentioned, a showing thelower end thereofwhere the connecter is applied will be sufiicient foran explanation of my inrproved connecten Ordinarily the lamp tubes orburners have a cathode 4 Within thetube which is electrically connectedto 0 an external terminal 4, commonly in. the

form of a metallic band about the tube adjacent its cathode end. Lateralbracing of the tube is provided by a number of resilient fingers 5suitably secured to the hous- 5 mg.

Tube 1 is supportedand connection is made to its cathode connecter band4 by a combined support and terminal. This sup port and connecter has anex'pansible and contractible split clamping ring 6 which sur'rounds'andclosely enibraces the terminal band 4 of tube 1. Ring 6 has a'pair ofmounting lugs 7 and 8 projecting'ol'ltwardly and parallel from oppositeedges thereof. The free ends 9 and 10 of ring 6 are bent so as to assumea substantially parallel relation and are provided with correspondingholes fora bolt 11. Lugs 7 and'8 are provided with elongated holes 11and 12, respectively. A slit 13, extendsbetween hole 13 and the edge oflug 8.

Clamping ring 6 may be formed from a single punching of sheet metal suchas shown in Fig. 5. The blank and theopenings therethrough may be formedin one operation. Bendingthe blank in the region of the dotted lines ofFig. 5 ,serves to give the clamp its finished structure as shown in Fig.3 and 4. 'j

A clamping nut 14 serves to holdthe connecter in place. The central zoneof nut 14 is of reduced diameter to form a pair of heads 15 and 16. Theforward end of the bore of nut 14 is enlarged and the rest of the boreis threaded. Clamping ring 6 and nut 14 are assembled together byopening the hole 12 at-the slit 13 and positioning the reducedintermediate section of the nut within hole 12 of lug 8. This assemblymay be accomplished by opening up slit 13 far enough to receive the nut.When the slit is again substantially closed nut 14 is loosely retainedby the-clamping ring.

Nut 14 is adapted to be screwed upon the projecting end of a threadedstud 17. Stud 17 is electrically connected to' one of the lamp electricterminals and is firmly held in position on a suitable support in thehousing by a nut 18. The enlarged part of the bore of nut 14 assists inthe ready'positioning of the nut on stud 17. Whenthe' nut is turned homeon stud 17 the electrical conin rotectin the lam a "ainst breaka ew P gP g a:

The elongated holes in lugs 7 and 8, allowing some variation in therelativepos'itions of the lamp tube and stud 17, facilitate the ders thesupport shock'absorbent and assists installation of the tube within itshousing.

Since the clamping ring and nut of the supporting connecter areassembled as aunit the danger of losing the nut or misplacing it when alamp tube is being changed is reduced. The proper positioning of the connecterin the lamp housing is also made much easier as the nut is alwaysapproximately 1 then inserted into the housing and nut 14 is turned uponstud 17 The elongated holes in lugs 7 and 8, the enlarged end of thebore of the nut and the fact that the nut is approximately positionedwhen the tube is inserted all contribute to the easy and rapid placementand connection of the lamp.

Having described my invention what. I claim as new and desire to secureby Letters Patent, is

1. A connecter tube with an electrode therein and an external terminalconnected to the electrode, comprising a split ring for embracing thelamp tube and engaging its terminal, means for clamping the ring aboutthe tube, a pair of resilient outwardly extending lugs formed integralwith said ring, said lugs being l0n gitudinally slotted, and a, nut heldby one of said lugs so as to be capable of rotative and limited axialmovement, and adapted to for a lamp which has a.

for clamping the other of said extensions to a threaded support.

3. A lamp support andelectrical connecter comprising a ring forembracing the lamp tube and its external terminal, a pair of perforatedlugs projecting from the ring, and a nut loosely and rotatably retainedin the perforation of one of said lugs for attaching the other of saidlugs to a threaded support.

4. An electrical connecter for a lamp tube equipped with an externalterminal, comprising a clamping ring for encircling the tube andelectrically en aging the terminal thereof, a pair ofspacecf apart lugsprojecting outwardly from opposite edges of the ring and havingreglstering holes therethrough, and a nut having a restricted portionintermediate its ends and enlarged heads adjacent each end, therestricted ortion being loosely positioned within the ole of one of thelugs and removal therefrom being prevented by the heads, said nut beinginternally threaded to attach the ring to a current conducting support.

In testimony whereof I hereunto subs scribed my name.

- FRITZ A. ANDERSON.

